D8398: fastexport: fix diagnostics

[joerg.sonnenberger (Joerg Sonnenberger)]

joerg.sonnenberger added a comment.


  Think about any attempt to localize the error message.

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D8398/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D8398

To: joerg.sonnenberger, #hg-reviewers, pulkit
Cc: martinvonz, mercurial-devel